
Now is the time of nuts. Winter evenings and bowls with candy and nuts on the candle-lit coffee table - what do you like? Candy? Nuts? This is a difficult choice! Take the nuts. ( More nuts than candy anyway!) Nuts are healthy, they are filling, they give you new energy and the  important healthy fat. Nuts have lots of positive effects on our health and the ability  of our immune defence to protect us against diseases.
Nuts were used as food and oil for centuries as early as 200 years B.C.,  and the Romans used sugar glazed almonds at special occassions.
Walnuts
The walnut tree grows wild in the forests and thickets of the Danish woods, but it is   als a common garden tree. Since Denmark is the northernest country of the walnut tree's existence, the fruits are many in some years and almost none in others. The walnut origins from Asia minor, where it still grows wild. From  here  it has spread to southern Europe and further to the USA. In Asia it  has  spread via Iran to China - and today China, USA and Turkey are the   largest producers of walnuts. Walnut is mostly plant as a fruit-tree,  but the wood is very sought-after for furniture and rifle butts.  Both Italy, England and France  work with a very fast growing walnut.  The cultivation-purpose is timber  production. 
Walnuts remind about a small brain. The colour of the   walnut-shell  reveals the quality, a light shell is high quality.The   taste of the  nut is sweet and mild, if not, it is too old. Unfortunately   nuts sold  in shops are often too old, and their taste is strong and   rancid. Put  fresh, cracked nuts into  the freezer. Durability ab. 8 months. Walnuts  are  ripe when they fall  out of the green capsule. Unripe walnuts are  plucked  in summer, about  20. July.
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| walnut tree, photo: grethe bachmann | 
The garden walnuts can be dried in a boiler   room or in a warm cellar, but they can also be eaten fresh. They have   like most other nuts a short validity before they go mouldy or rancid   because of the high fat content. It is a good idea to keep them in a   freezer. Walnuts are proclaimed the healthiest among nuts -  they contain more   antioxidants and more of the healthy fat which is good for the heart   than other nuts. Eat about 7 walnuts a day in order to obtain the   benefits.
Walnuts are especially known from walnut-bread and as a decoration on  cakes and in cheese arrangements - and in pies and salads (like  Waldorf-Salad -  hello, Basil Fawlty!). But they are also - like most nuts  and like almonds - a part of the salt-kitchen, like used in vegetarian  dishes, patés or in a sauté with plums and walnuts in Balsamico as an  accompaniment for game and roasts.  Walnut produces also a well-tasting  and very expensive oil. The green fruits are very  popular in spice snaps.
Pickled green walnuts 
1 kilo unripe walnuts
750 gram sugar 4 dl water
½ bottle brown rum 
Newly plucked walnuts pricked with a rough needle.  Put into cold water for 12-14 days. Water must be changed each day. The last day boil them under lid until they are tender, drip off and put into a glass. Cook a pickle of sugar and water, pour it over the nuts and stir it daily for a week. Sieve out the pickle and cook it about 15 minutes with a piece of cinnamon or a vanilla pod. Add half a bottle of brown rum and pour the warm pickle over the nuts. 
Hazelnuts
Hazel is common in Denmark along hedges and in the edge of woods, and it grows in many gardens and parks. It's possible to pluck hazelnuts en masse. They taste extremely well. If hazelnuts have to be preserved, they must be ripe when they are  plucked, or else their taste is not good and they mould easily. The nuts  are ripe, when the shell is nut-brown and fall out of the hulls by themselves. Hazelnuts are rich in folat, which is a B-vitamin, and rich in vitamin E, in calcium, magnesium and potassium. They are very energy-rich and with a high fat-content, more than half is fat and the rest is hydrocarbonate and protein. Hazelnuts were basic 
food since Stone Age.
Hazel was introduced by man very early, and the long thin stems were used for fishing-traps, hedges etc. Hazel was a popular winter food since before the time of agriculture; the nuts were found as grave gifts in very early graves, and scientists are of the opinion that the hunter-gather people deliberately did sowe hazel overall where they came. Hazel is cultivated in most of Europe and in countries like China, Australia and USA. Hazelnuts are an ingrediense in Nutella. The biggest problem of nuts bought in shops is that they are often too old and rancid or mould. So it is a good idea to look for the production-date. Most dried nuts come from Turkey. The dried hazelnuts from shops should be kept in the freezer, where they last for a year. 
Hazelnuts are good both in cooking and baking. Coarsely chopped or crushed hazelnuts can be stirred into a paté or be a part of a breading of meat or fish. Hazelnuts are a delicious part of a salad. They can be roasted in the oven or in the pan which brings out the fine taste. If the nuts have turned dull and dry they can be saved if they are put into water for a few hours. 
Not all nuts are nuts but we call them nuts:
 Almonds
Almonds are rich in vitamin E, folic acid and blood  pressure-submerging minerals like magnesium, potassium, calcium, phospor  and iron. 28 gram contains as much calcium as 1/4 cup of milch and is  one of the best foods of vitamin E in the form of alpha-tocopherol,  which is a cancer-preventive antioxidant. Almond is the kernel 
in  green fruits from the almond tree. The tree supposedly origins from  Asia, but is cultivated today overall , like in the Mediterraneans,  Central Asia and Africa. Almonds are especially used in making marzipan  for desserts, cakes and burnt almonds, but it is also a part of the salt  kitchen. Almonds have a high fat content of the healthy fats, and their  durability is short, so they are best kept in the freezer. Besides  common almonds are bitter almonds, which even in small amounts bring out  the characteristic almond taste in marzipan and Italian Amaretto  liqueur. The bitter almonds contain small amounts of the poisonous  substance amygdalin, which chemically is a precursor of prussic acid. It  is not dangerous in small amounts.  
Cashew-nuts  are an excellent source of copper and a good source of magnesium, iron, zinc and biotin, which is a water-soluble  B-vitamin, which among other things can regulate the sugar transformation. They come from India, East Africa and South America. A cashew-nut is an "excrescence" under the fruit of the cashew tree. The nuts are always sold without shell, since the shell has a corroding oil, which irritates the skin. Cashew nuts are sold as they are or salted and roasted; they are mostly sold as snacks, but are also a part of many Thai dishes and other Asian dishes.
 Pecan nuts are a good source of both vitamin A, vitamin E, folic acid, copper, magnesium, phosphor, potassium, manganese, zinc and B 3. The pecan nut reminds about a large walnut, which family it belongs to. Pecan nuts origin from USA, which has the biggest export of pecan nuts in the world. It is one of the crops, which is connected to the original food of the Native Americans. They are sold dried and roasted and salted and they are used in USA for the famous Pecan Pie and as a filling in cookies and ice cream. They have a fine, mild and special taste, which distinguishes them from other nuts. The pecan nuts can be used like most other nuts.
 They have got the highest fat content of all nuts, about 80 % ,which make them very nutrient rich. The main part is the healthy fat. 
Macadamia nuts are rich in protein, fibres, potassium, magnesium and the healthy fats.They are used in snacks and cakes.
 They were first discovered in Australia. Hawaii is today the leading producer of the Macadamia-nuts. 
Peanuts are actually a legume and  contain mostly proteins. Peanuts and peanut butter contain furthermore much vitamin E, folat, potassium and zinc.
 Peanuts  origin from South America, and they are the seeds from a  tropical leguminous plant. They are used for snacks and cooking and  production of oil. 
  

The large
 Brazil nuts are rich in protein, copper, magnesium,  fibres, vitamin E and niacin, which are important for the energy transformation and the transformation of glucose, amino acids and fat. The Brazil nuts also contain a good part of selenium, which is famous for being an immune-enhancing mineral, which among other things protect against cancer. Two medium size Brazil nuts contain 200 microgram selenium. 
Brazil nuts can widely be used like hazelnuts. They contain like all nuts much fat, about 60 %, mostly the healthy fats. They have a sweet taste. Like other nuts they should be kept in the freezer. The Brazil nuts are from a South American tree in the tropical rain forests of Brazil. They have coconut-like fruits with seeds, and they are actually not nuts in spite of their name. The nut is in Brazilian named "chestnut from Para", which is a town by the Amazone river. The Brazil nuts are especially exposed to contain aflatoxines, a poisonous substance, which comes from mould inside the nut.
The Pistachios are rich in minerals, especially potassium and phosphor. They are also a good source of carotenoids which is a strong antioxidant. T
he pistachio is a small light green nut with a dark red membrane. The pistachios origin from the Middle East ,where they were known since ancient times, and they are today a common snack in the Mediterranean, especially in Turkey and Greece. They taste mild and finely perfumed -  they have a content of 40-45 %  fat, primarily the healthy fats. They are found in two products,  as whole nuts with shell, salty and used as snacks and as the dried kernel without shell. The pistachios are in many ways a part of cakes and desserts. 
Pine nuts are small white fruits from the pines, the tall dark green conifers, which grow overall in southern Europe. They are called pignolia nuts or pinons in Spanish. The seeds are surrounded by an almost black, hard shell, which is difficult to remove - that's why the kilo price is high. They taste both sweet and sharp,  a little of resin. The pine nuts come especially from South Europe and Turkey and they are used in many contexts in salads, pasta, cakes and as snacks etc. They have like other nuts got a high fat content, about 40 % , but this is primarily healthy fat. The oil in the pine nut gets easily rancid, so they should be kept in the freeezer. 
 Although nuts ar healthy, the roasted and sugar glazed nuts are not!
Source: Anette Eckmann, Køkkendagbogen, 2004 ; VOM Viden om Mad; I Form Magasin 2011, Camilla Plum Mors Mad. 2002.